gynecologist
Medical specialist in women's health; a common term in clinical and everyday contexts.
She is studying to become a gynecologist.
I have an appointment with a gynecologist.
産婦人科医 is an obstetrician-gynecologist (OB/GYN), covering both pregnancy and women's health, while 婦人科医 focuses specifically on gynecology.
Compound of 婦人科 (gynecology) + 医 (doctor).